Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 450mm stroke, 1/4" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ50 mm
- Stroke450 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S
A double-acting mini cylinder with an adjustable extend stroke and a variable air cushion at both ends, the MACJ50X450-30S covers 420-450 mm of usable extend travel through its 30 mm trim window. At 0.5 MPa the 50 mm bore delivers 981 N on the push stroke, and the variable cushion soaks up end-of-stroke shock so you can run 30-800 mm/s without hammering the aluminium covers.
Derate for real work: expect about 589 N of usable push at 0.5 MPa, which vertically lifts roughly 100 kg, or 50 kg keeping a 2:1 margin. The riveted stainless barrel and hard-chrome plated rod shrug off washdown and damp plant air, and the standard built-in magnet accepts CMSG, DMSG and EMSG switches with no special piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -30 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S Is Used
Roller conveyor pallet pusher
The 30 mm window parks the stop between 420 and 450 mm so mixed pallet sizes square up to the same transfer plate; about 589 N of working push slides a loaded euro pallet once the end cushion tames the arrival.
Sliding guard door on a CNC line
450 mm covers the door travel and the 981 N push at 0.5 MPa overcomes a sticky guide rail, while the cushion keeps the latch stop from ringing at 800 mm/s.
Case ejector at the end of a case packer
Pushes finished cartons off the infeed table, and the 881 N pull at 0.5 MPa retracts the pusher pad fully clear of the next layer.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S the Right Cylinder?
Bore 40 peaks at 628 N push at 0.5 MPa; step up to bore 63 for 1558 N if the load is heavier. The stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the rod can drift, so valve the supply if holding matters. FA flange or LB foot mounting plus I and Y rod knuckles cover most fixturing, the magnet is already fitted, and at 450 mm the 16 mm rod needs the load guided square or side load will bend it.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X450-30S FAQ
At 0.5 MPa: 981 N push, 881 N pull. At 0.7 MPa: 1374 N push, 1233 N pull. Theoretical maximum at 1.0 MPa is 200 kgf. Working pressure spans 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, fluid air filtered to 40 um.
Yes - every MA-series cylinder includes the piston magnet as standard, so CMSG, DMSG and EMSG switches clip straight onto the stainless barrel. Port size at this bore is 1/4 inch, rod thread M14x1.5, rod diameter 16 mm.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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